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JACOB GRAVES, OF NEW IPSVIGH, NEW HAMPSHIRE.

MACHINE FOR GONIDENSING OR REPARING COTTON ]RJOV'INGrS,` &c., FORSPINNING,

Specification of Letters Patent No. 3,250, dated September 1, 1843.

To all whom t may concern.'

Be it known that I, JACOB GRAVES, of New Ipswich,in the county ofHillsborough and State of New Hampshire, have invented a certain new anduseful Mechanism for or Method of Preparing `Cotton for Spinning, andthat the following description, taken in connection with theaccompanying drawings, constitutes a full and exact specilication of thesame.

Figure l, of the drawings above mentioned, represents a top view of myiniproved mechanism for effecting the preparation of cotton,`and Fig. 2is a vertical section thereof.

A, A, A, &c., B, B, B, &c., Figs. l, and 2, are a series of drawingrollers arranged and operated in the usual manner; two of the said`series being represented in Fig. l. There may be any number of themaccording to circumstances. In front of each range of draw rollers, orseriesof the same, a vertical rounding or` guiding tube or funnel C issuitably supported upon the eX- tremity of an arm D; or the said tuberevolves in proper bearings in the end of the arm. Beneath each of theguiding tubes are the condensing rollers E, F arranged upon horizontalshafts G, H. The periphery of one of these condensing rollers has agroove a formed in and entirely around it, while that of the other has atongue b upon and around it, which corresponds to the groove of thefirst. The one roller is disposed in front of the other, and so that thetongue of one roller shall enter the groove of the other and the frontor tongue roller is pressed against the other by means of a spring Iacting upon the shaft of the front roller.

The shaft H is revolved by a small spur gear K upon one end of it, whichthrough the intervention of a spur gear N, engages with a pinion L onthe driving shaft M of the draw rollers.` A beveled gear O (representedin Fig. 2 by dotted lines) upon the opposite end of the shaft H engageswith a beveled pinion P upon, and gives motion to, a vertical shaft Q,which has a grooved pulley R upon it, around which (pulley) a belt orband S passes to and about pulleys c, fl of funnel or twisting orrounding tubes C, C and thereby gives to the said tubes a revolvingmotion.

The apparatus, thus arranged, is set up directly against the doffer endof a carding` engine whose doffer or dolfers are constructed so as toremove the fleece from the main cylinder in suitable strips or slivers,each of which is conducted to its series of draw rollers through or bymeans of a conical or trumpet mouth S. The sliver, after its passagethrough the draw rollers, where it is drawn down to the requisitedegree, is received into the guiding or rounding tube C, which,revolving at the proper speed, converts it into a round or cylindricalroving which, passing therefrom between the grooved and tonguedperipheries of the rollers E, F, is condensed by the said rollers and isfinally received and coiled into a can placed beneath them. This can,after being properly filled, is taken to the spinning frame and theroving thus formed is then converted into twist, directly from the saidcan.

Many attempts have been made by others to spin from the can, but afailure has invariably ensued from want of strength in the roving; butthe combination of the grooved and tongued condensing rollers with thedrawing and rounding rollers completely overcomes the hithertoinsurmountable ditliculties, and gives a consistency to the rovingalmost equal to that which would be imparted to it by the doublespeeder,and wholly sufficient for all practical purposes. By the above improvedmechanism we are enabled to dispense with the ordinary drawing frameSpeeders and stretchers,`besides, more work is put to the spinning frameat one time, thus saving labor in changing bobbins. Less strain isrequired to draw from the can than from bobbins, and consequently thereis less liability of the roving to stretch and become uneven. Thesimplicity and cheapness of construction of the 4mechanism together withthe quantity of other chinery which is superseded by it, render it ofthe greatest utility to those interested in the manufacture of cotton. i

Having thus explained my invention I shall claim The particular method,above set forth, of preparing the cotton for spinning, viZ, subjectingthe same, as it proceeds from the cai-ding engine tothe action ofaseries of drawing rollers, rounding or guiding tubes and grooved andtongued condensing rollers, in combination with each other and thecarding machine, the said cotton being thus formed into roving andreceived into a can from which it is converted into twist by thespinning machinery; or in other Words, l set my signature this twentyseventh (27th) claim the combination of the series of draW- day of Julyin the year of our Lord eighteen 10 ing rollers the twisting or roundingtubes and hundred and forty three. the grooved and tongued condensingroll- JACOB GRAVES. ers, the Whole being arranged and operatingsubstantially as herein above specified.

ln testimony that the above is a correct speeoation of my invention Ihave hereto Witnesses SALMON STEVENS, ORLANDO MARSHALL.

